table{
    margin: 30px auto;
    text-align: center;

}
.t1{
    width: 800px;
}
.t2{
    width: 300px;
}
.t2 input{
    width: 98%;
}

.nav{
    list-style: none;
    overflow: hidden;
}
.on{
    background-color: royalblue;
    color: white;
}
.nav li{
    float: left;
    width: 100px;
    height: 40px;
    color: #222222;
    font-size: 16px;
    text-align: center;
    line-height: 40px;
    border-right: 1px solid lightblue;
}



